Scientist Kris Kelvin travels to the mysterious planet Solaris to investigate the failure of an earlier mission. But when his long-dead wife appears on the space station, he realizes the planet has the power to materialize human desires. Director Andrei Tarkovsky's sci-fi cult classic, based on Stanislaw Lem's novel, presents an uncompromisingly unique and poetic meditation on space travel and its physical and existential ramifications.